macOS sierra 10.12.6
(but in xcode build settings – base sdk 10.13...)
are you guys okay with that?
.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/rubygems.rb:289:in `find_spec_for_exe': can't find gem bundler (>= 0.a) with executable bundle (Gem::GemNotFoundException)
i don't appear to have any git submodules installed
What does this mean? Did you follow https://github.com/MacDownApp/macdown#environment-setup ?